The different manifestations of hypothermia are

Hypothermia causes peripheral vasoconstriction resulting in acrocyanosis, cool extremities and delayed peripheral capillary refill time(C). The baby becomes restless and then lethargic. Chronic or recurrent episodes cause poor weight gain. CVS manifestations include bradycardia, hypotension, raised pulmonary aery pressure with resultant hypoxemia, tachypnoea and distress. Presence of lethargy, poor reflexes, decreased oral acceptance and apnea denotes neurological depression. Abdomen distension, vomiting and feeding intolerance make enteral intake difficult. Acidosis, hypoglycemia, oliguria, azotemia and generalised bleeding can occur in severe cases. Reference : page 146 Ghai Essential Pediatrics 8th edition